wave during a storm. The vertical displacement, h, of the wave, in metres, can be modelled by h() =0.8cost + 0.5sin2t, where / is the time in seconds. a) Determine the vertical displacement of the wave when the velocity is 0.8 m/s. b) Determine the maximum velocity of the wave and when it first occurs. c) When does the wave first change from a "hill" to a "trough"? Explain